Shape appears different in edit mode, object mode and render
It is because you have a duplicate of your object in you scene. The one  named tpose_human_body. I see you have it hidden but blender still renders it. If you want it to not be rendered move it into a new collection and disable the collection from the view layer by unchecking the tickbox near it.
There was a simpler way to disable render for objects before but it has changed and nI don't know how to do it in 2.8